Home / 81,562.75-122,355.36-25,406.87

Finding the Fourth Proportional to 81,562.75, 122,355.36 and 25,406.87

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Solution

The fourth proportional to 81,562.75, 122,355.36 and 25,406.87 is: 38,113.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,562.75 : 122,355.36 = 25,406.87 : x
  2. Step 2: Convert to fraction form
    81,562.75/122,355.36 = 25,406.87/x
  3. Step 3: Cross multiply
    81,562.75x = 122,355.36 × 25,406.87
  4. Step 4: Simplify right side
    81,562.75x = 3,108,666,113.55
  5. Step 5: Solve for x
    x = 3,108,666,113.55/81,562.75
  6. Step 6: Final answer
    x = 38,113.80

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.